As it can be seen from Eqs. (REF ), (REF ), (REF ) and (REF ) for \(a = 0\) , the results in Ref. [1]} are obtained i.e, when \(a=0\) , the critical points are \(v_{c}=2\sqrt{6}Q\) , \(T_{c}=\frac{\sqrt{6}}{18\pi Q}\) , \(P_{c}=\frac{1}{96\pi Q^2}\) 
and \(\frac{P_{c}T_{c}}{v_{c}}=\frac{3}{8}\) . Critical points change due to thermal fluctuations. For example critical specific volume decreases while the critical temperature and pressure increase. Universal number of phase transition depends on \(Q\)  and \(a\) .
